Atmospheric haze is mainly caused by?
Correct Answer :
Ultra fine size particulate matters
Solution :
The correct option is Ultra fine size particulate matters.
Atmospheric haze is an aerosol of fine solid particles or liquid droplets suspended in the air. These suspended particles block and scatter sunlight, reducing visibility and giving the sky a distinct brownish or grayish hue.
While gaseous pollutants like nitrogen oxides, sulfur oxides, carbon dioxide, and carbon monoxide contribute to air pollution and chemical smog, the physical phenomenon of haze is directly caused by the light-scattering properties of suspended particulate matter (PM), particularly PM2.5 (fine particles with diameters less than 2.5 micrometers) and ultra-fine particles. These tiny particles have a high efficiency for scattering visible light due to their size being comparable to the wavelength of light, leading to the visual obscurity known as haze.
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